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    • 4. 发明授权
    • Method and apparatus for storing image signals
    • 用于存储图像信号的方法和装置
    • US5267153A
    • 1993-11-30
    • US684072
    • 1991-04-12
    • Kazuo ShimuraTsutomu KimuraMasaaki Ohtsuka
    • Kazuo ShimuraTsutomu KimuraMasaaki Ohtsuka
    • G06T9/00H04N1/41H04N5/85H04N5/926H04N7/46G06F15/00G01T1/11H04N1/46H04N7/12
    • H04N19/59H04N1/41H04N5/9261H04N5/85
    • In image signal storing method and apparatus, a continuous tone image signal representing a continuous tone image and a binary image signal representing a binary image, which carries information giving specifics about the continuous tone image, are obtained. A redundancy imparting process is carried out on the binary image signal in accordance with irreversible signal compression processing such that the information represented by the binary image signal may not be reduced when the irreversible signal compression processing is carried out. Thereafter part of the continuous tone image signal, which part corresponds to part of the region in the continuous tone image, is replaced by the binary image signal, which has been obtained from the redundancy imparting process. The irreversible signal compression processing is then carried out on an image signal, which has been obtained from the replacement. An image signal, which has been obtained from the irreversible signal compression processing, is then stored.
    • 在图像信号存储方法和装置中,获得表示连续色调图像的连续色调图像信号和表示二进制图像的二进制图像信号,其携带关于连续色调图像的细节的信息。 根据不可逆信号压缩处理对二进制图像信号执行冗余赋予处理,使得当执行不可逆信号压缩处理时,可以不减少由二进制图像信号表示的信息。 此后,连续色调图像信号的一部分对应于连续色调图像中的区域的一部分被替换为从冗余赋予处理获得的二值图像信号。 然后对从替换获得的图像信号执行不可逆信号压缩处理。 然后存储从不可逆信号压缩处理获得的图像信号。
    • 5. 发明授权
    • Radiation image read-out apparatus
    • 辐射图像读出装置
    • US5237358A
    • 1993-08-17
    • US779246
    • 1991-10-18
    • Sadami YamadaNobuyoshi NakajimaMasaaki OhtsukaShuji Kuhara
    • Sadami YamadaNobuyoshi NakajimaMasaaki OhtsukaShuji Kuhara
    • G03B42/02G03D13/00
    • G03B42/02G03D13/003
    • A radiation image read-out apparatus comprises an automatic developing machine for carrying out a developing process on silver halide film, on which a radiation image has been recorded as a latent image, while the silver halide film is being passed through the automatic developing machine. A film digitizer is connected to the automatic developing machine such that it may directly receive the silver halide film having been fed out of the automatic developing machine. The film digitizer photoelectrically reads out the radiation image, which has been converted into a visible image during the developing process, from the silver halide film and thereby generates an image signal representing the radiation image. The radiation image read-out apparatus is free of the problems in that considerable time and labor are required to set the film manually in the film digitizer, and the film becomes stained with finger marks, dust, or the like.
    • 放射线图像读取装置包括一个自动显影机,用于在卤化银膜通过自动显影机的同时,对其上已经记录有放射线图像作为潜像的卤化银膜进行显影处理。 胶片数字化仪连接到自动显影机,使得它可以直接接收已经从自动显影机送出的卤化银膜。 胶片数字化仪从卤化银膜光电读出已经在显影过程中转换成可见图像的辐射图像,从而产生表示辐射图像的图像信号。 放射线图像读取装置没有这样的问题,即需要相当长的时间和劳动力将胶片手动地设置在胶片数字转换器中,并且胶片被指纹,灰尘等污染。